1,749 research outputs found
Hydrogen depolarized carbon dioxide concentrator performance improvements and cell pair structural tests
The investigations and testing associated with the CO2 removal efficiency and voltage degradation of a hydrogen depolarized carbon oxide concentrator are reported. Also discussed is the vibration testing of a water vapor electrolysis cell pair. Performance testing of various HDC cell pairs with Cs2CO3 electrolyte provided sufficient parametric and endurance data to size a six man space station prototype CO2 removal system as having 36 HDC cell pairs, and to verify a life capability exceeding six moths. Testing also demonstrated that tetramethylammonium carbonate is an acceptable HDC electrolyte for operating over the relative humidity range of 30 to 90 percent and over a temperature range of 50 to 80 F
Physicochemical characterization of the PEG8000-Na2SO4 aqueous two-phase system
The polyethylene glycol-sodium sulfate aqueous two-phase system has been characterized at 23 °C. Tielines
for the phase diagram were obtained experimentally. Phases in equilibrium were characterized by means
of the solvatochromic parameters Ï*, α, and ÎČ, which provide a measurement of the polarity/polarizability
and the H-bond donor and acceptor abilities, respectively. The ability of the phases to participate in hydrophobic
interactions was characterized by means of the free energy of transfer of a methylene group between the
conjugated phases, using the partition of a homologous series of dinitrophenylated amino acids. The results
show the effect of the presence of polymer and salt in the aqueous phase, and a comparison of both phases
with pure water is made.LSRE-PortoUniversidade CatĂłlica PortuguesaEscola Superior de Biotecnologia do PortoFundação para a CiĂȘncia e a Tecnologia (FCT
Labour supply and skills demands in fashion retailing
If, as Adam Smith once famously suggested, Britain was a nation of shopkeepers then it is now a nation of shopworkers. Retail is now a significant part of the UK economy, accounting for ÂŁ256 billion in sales and one-third of all consumer spending (Skillsmart, 2007). It is the largest private sector employer in the UK, employing 3m workers, or 1 in 10 of the working population. For future job creation in the UK economy retail is also similarly prominent and the sector is expected to create a further 250,000 jobs to 2014 (Skillsmart, 2007). The centrality of retail to economic success and job creation is apparent in other advanced economies. For example, within the US, retail sales is the occupation with the largest projected job growth in the period 2004-2014 (Gatta et al., 2009) and in Australia retail accounts for 1 in 6 workers (Buchanan et al., 2003). Within the UK these workers are employed in approximately 290,000 businesses, encompassing large and small organizations and also a number of sub-sectors. This variance suggests that retail should not be regarded as homogenous in its labour demands. Hart et al. (2007) note how skill requirements and the types of workers employed may differ across the sector. This chapter further opens up this point, providing an analysis of the labour supply and skills demands for the sub-sectors of clothing, footwear and leather goods, which are described by Skillsmart (2007: 48) as being 'significant categories in UK retailing'
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Economic impacts of the United States of siting decisions for the international thermonuclear experimental reactor: Executive summary
This summary highlights the results of a study that examined and compared the probable short-term economic impacts of the International Thermonuclear Experimental Reactor (ITER) on the United States (U.S.) if (1) ITER were to be sited in the U.S. or (2) ITER were to be sited in one of the other countries that, along with the U.S., are currently participating in the ITER program. Life-cycle costs associated with ITER construction, operation, and decommissioning were analyzed to assess their economic impact. A number of possible U.S. {open_quotes}host{close_quotes} and U.S. {open_quotes}non-host{close_quotes} technology and cost-sharing arrangements were examined. The study examined both national and local/regional economic impacts, as measured by gross domestic product (GDP), regional output, employment, income, and net exports. These impacts represent a portion of the complex, interrelated set of economic considerations that characterize U.S. host and U.S. non-host participation in ITER
Guide to archiving personal data
Key messages in this Guide: -Data Protection law shapes archiving of personal data. It supports it and does not prevent it; -Personal data worthy of permanent preservation should be safeguarded by recordkeepers until it is archived; - The new archiving in the public interest purpose adapts the operation of various principles and maintains exemptions from data subject rights such as the right to be forgotten and data rectification where the necessary safeguards are met
On the making and taking of professionalism in the further education workplace
This paper examines the changing nature of professional practice in English further education. At a time when neo-liberal reform has significantly impacted on this under-researched and over-market-tested sector, little is known about who its practitioners are and how they construct meaning in their work. Sociological interest in the field has tended to focus on further education practitioners as either the subjects of market and managerial reform or as creative agents operating within the contradictions of audit and inspection cultures. In challenging such dualism, which is reflective of wider sociological thinking, the paper examines the ways in which agency and structure combine to produce a more transformative conception of the further education professional. The approach contrasts with a prevailing policy discourse that seeks to re-professionalise and modernise further education practice without interrogating either the terms of its professionalism or the neo-liberal practices in which it resides
Candidates for detecting exoplanetary radio emissions generated by magnetosphere-ionosphere coupling
In this paper we consider the magnetosphere-ionosphere (M-I) coupling at
Jupiter-like exoplanets with internal plasma sources such as volcanic moons,
and we have determined the best candidates for detection of these radio
emissions by estimating the maximum spectral flux density expected from planets
orbiting stars within 25 pc using data listed in the NASA/IPAC/NExScI Star and
Exoplanet Database (NStED). In total we identify 91 potential targets, of which
40 already host planets and 51 have stellar X-ray luminosity 100 times the
solar value. In general, we find that stronger planetary field strength,
combined with faster rotation rate, higher stellar XUV luminosity, and lower
stellar wind dynamic pressure results in higher radio power. The top two
targets for each category are Eri and HIP 85523, and CPD-28 332 and
FF And.Comment: Accepted for publication in Monthly Notices of the Royal Astronomical
Society Letter
Less is more: possibility and necessity as centres of gravity in a usage-based classification of core modals in Polish
In this paper we present the results of an empirical study into the cognitive reality of existing classifications of modality using Polish data. We analyzed random samples of 250 independent observations for the 7 most frequent modal words (mĂłc, moĆŒna, musieÄ, naleĆŒy, powinien, trzeba, wolno), extracted from the Polish national corpus. Observations were annotated for modal type according to a number of classifications, including van der Auwera and Plungian (1998), as well as for morphological, syntactic and semantic properties using the Behavioral Profiling approach (Divjak and Gries 2006). Multiple correspondence analysis and (polytomous) regression models were used to determine how well modal type and usage align. These corpus-based findings were validated experimentally. In a forced choice task, naive native speakers were exposed to definitions and prototypical examples of modal types or functions, then labeled a number of authentic corpus sentences accordingly. In the sorting task, naive native speakers sorted authentic corpus sentences into semantically coherent groups. We discuss the results of our empirical study as well as the issues involved in building usage-based accounts on traditional linguistic classifications
"Just Going Through the Motions.âŠ": A Qualitative Exploration of Athlete Perceptions of Social Loafing in Training and Competition Contexts - Implications for Team Sport Coaches
Semi-structured interviews were conducted with twenty team sport athletes representing a range of different sports with the aim of investigating their views relating to social loafing in training and competition. General themes investigated and subsequent content analysis highlighted
factors that promote or reduce the extent of social loafing. Determinants of self-loafing were grouped according to three distinct categories: Group processes; Task characteristics and Individual perceptions. Social loafing among others was perceived to be prevalent in both the training and competition scenarios with more examples of social loafing provided in the training situation. The signs of social loafing were grouped according to the
following themes: Cognitive & Emotional, Behavioural, Communication and Player Intuition. Consequences of social loafing were found to be detrimental to the effort and performance of both the individual and the team. Athletes were also able to differentiate between perceived social loafing and the perceived use of âstrategic restâ in team sports. Implications for the coaching process are far reaching with the need to develop an effective team culture and to provide training sessions that are interesting, engaging and relevant
2015 Infectious Diseases Society of America (IDSA) Clinical Practice Guidelines for the Diagnosis and Treatment of Native Vertebral Osteomyelitis in Adultsa
These guidelines are intended for use by infectious disease specialists, orthopedic surgeons, neurosurgeons, radiologists, and other healthcare professionals who care for patients with native vertebral osteomyelitis (NVO). They include evidence and opinion-based recommendations for the diagnosis and management of patients with NVO treated with antimicrobial therapy, with or without surgical interventio
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